Microwave Communication The antenna separations (in meters) required for optimum operation of a space diversity system can be calculated from:where R = effective earth radius (m) and L = path length (m) S = λR/RL S = λR/L S = 3λR/L S = 2λR/L S = λR/RL S = λR/L S = 3λR/L S = 2λR/L ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In an SHF pulsed radar set, a reflex klystron can be used as a Single mixer stage Transmitter oscillator Local oscillator Duplexer stage Single mixer stage Transmitter oscillator Local oscillator Duplexer stage ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Oscillators of a klystron tube are maintained By circulating bunches of electrons within the cavities. By plate-to-cathode feedback By feedback between the accelerating grid and the repeller By bunches of electrons passing the cavity grids By circulating bunches of electrons within the cavities. By plate-to-cathode feedback By feedback between the accelerating grid and the repeller By bunches of electrons passing the cavity grids ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The main frequency determining element of a klystron is Its resonant cavity Its mode of operation The repeller voltage The accelerating voltage Its resonant cavity Its mode of operation The repeller voltage The accelerating voltage ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which causes multipath or frequency selective fading? Large reflector Nearer reflector Small reflector Further reflector Large reflector Nearer reflector Small reflector Further reflector ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Which of the following is used as an oscillator device in the SHF band? Thyratron tube Klystron tube Both B and C Tunnel diode Thyratron tube Klystron tube Both B and C Tunnel diode ANSWER DOWNLOAD EXAMIANS APP
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